Fix integration tests on GitHub Actions

.github/workflows/ci.yml

@@ -46,7 +46,7 @@ jobs:
     - name: Checkout
       uses: actions/checkout@v3
     - name: Install Postgres client
-      run: sudo apt-get install -y postgresql-client
+      run: sudo apt update && sudo apt install -y postgresql-client
     - name: Run integration tests
       run: make integration-test
       env: